4491328 has 14 divisors (see below), whose sum is σ = 8912606. Its totient is φ = 2245632.

The previous prime is 4491323. The next prime is 4491329. The reversal of 4491328 is 8231944.

It can be written as a sum of positive squares in only one way, i.e., 2663424 + 1827904 = 1632^2 + 1352^2 .

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 4491328.

It is not an unprimeable number, because it can be changed into a prime (4491323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35025 + ... + 35152.

Almost surely, 2^4491328 is an apocalyptic number.

It is an amenable number.

4491328 is a deficient number, since it is larger than the sum of its proper divisors (4421278).

4491328 is an equidigital number, since it uses as much as digits as its factorization.

4491328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70189 (or 70179 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 4491328 is about 2119.2753478489. The cubic root of 4491328 is about 164.9902412349.

The spelling of 4491328 in words is "four million, four hundred ninety-one thousand, three hundred twenty-eight".